I managed to completely avoid being touched by ANY of the gels... right up until The Part Where He Kills You. I just hope that what Cave Johnson said about portals leeching out the poisons was true.If hopping through a portal from the Earth to the Moon doesn't do it, nothing probably will!

I like to personally think that she isn't free, but instead, in a 4d personal reality chamber. She sees what she wants to see, and assumes she is free; however, GlaDos is not finished with her yet. LoL. that would be the tits.

There are at least four poisons inside Chell's body right now, so there's nothing stopping me from assuming that the smash to black was just her dropping dead the moment she breathes real, non-recycled, adrenaline-free air.

And where was she just a few minutes ago? The Moon. In the middle of a vacuum sucking air out of the Enrichment Center. Where she no doubt inhaled lots of moon dust. Oh, and with the way the gel comes out, it might have gone up her nose. Point is, Chell had at least two deadly poisons in her, and was breathing radically different air. Couple that with an exit that not-too-subtly recalls being assumed into Heaven, and you can see why I like to think Chell died seconds after earning her freedom. In this setting, that'd be the only apropos ending.

Let's not forget that not five minute before, GLaDOS purged every last bit of humanity from her system. She'd know how bad of a shape Chell's in, with the poisonous moon rocks, asbestos poisoning, neurotoxin, and bullets lodged in her body. So the easiest way to get rid of Chell would be to just send her away to die, with no effort on her part. Why are you so opposed to Chell dying?

Look i don't think a person on cocaine has ever spontaneously died soon after not getting cocaine...it takes days for something like that. If you die suddenly you were already in critical condition, and chell showed no signs of that.

It just doesn't happen where you spontaneously go from athletically healthy to dead.

Now maybe a sudden brain hemorrhage from sudden change in air pressure might do it thats happened before more or less, or something else along those lines, but i just don't see it otherwise.

Not really possible due to the fact that in this scene you can clearly hear bird singing. Either Birds have immunity to that disease or GlaDOS was playing them in the background in order to troll Chel.

If you assume he was present for the pulverizing process, that's true. But once in gel form it can't be aspirated, and I'd assume he wasn't ever a test subject so he wouldn't have absorbed it through his skin or mouth.